Zobrazeno 1 - 10
of 18
pro vyhledávání: '"K. Ohwi"'
Publikováno v:
MTT-S International Microwave Symposium Digest.
This paper presents analysis and experiments of a newly developed YIG resonator circuit with isolator property, which is constructed with a YIG sphere, a 3 dB directional coupler and three coupling loops. The paper then goes on to describe experiment
Autor:
K. Ohwi
Publikováno v:
ICMMT'98. 1998 International Conference on Microwave and Millimeter Wave Technology. Proceedings (Cat. No.98EX106).
A method to determine the dielectric constant of liquid dielectric by measuring the shift of resonant frequency and of change Q's value of YIG ferrite resonator is presented. This method is suitable for microwave wide-band measurements of liquid diel
Autor:
K. Ohwi
Publikováno v:
APMC 2001. 2001 Asia-Pacific Microwave Conference (Cat. No.01TH8577).
The relation of frequency shift and dielectric constant of liquid is analyzed and evaluated numerically. The results shows that the possibility of the measurement of the dielectric constant of liquid by using a YIG resonator immersed in a liquid.
Publikováno v:
IEEE Transactions on Microwave Theory and Techniques. 26:364-369
A junction circulator appears inferior in average power-handling capability, although it is compact and light-weight and has good performance. A new type of 100-kW CW waveguide Y-junction circulator is realized by dividing the junction of the circula
Publikováno v:
Journal of Microwave Power. 12:201-207
A 100 kW CW Y-junction circulator at 915 MHz has been developed. The circulator has three metal discs and two protruding metal cylinders in the conventional waveguide junction. A thin ferrite disc ...
Publikováno v:
IEEE Transactions on Magnetics. 17:2957-2960
The dc magnetic field dependence of rf permeability in ferrite, the deviations of resonance dc magnetic field and its half-width in a ferrite disk, and the destruction temperature difference of the ferrite disks are measured in order to select the fe
Publikováno v:
IEEE Transactions on Microwave Theory and Techniques. 26:1035-1039
This paper presents the analysis and experiment of a newly developed YIG resonator circuit with isolator property, which is constructed with a YIG sphere, three coupling loops, and a 3-dB stripline directional coupler. This YIG circuit can be used ad
Autor:
J.P. Parekh, Y. Leonard Chow, G. Begemann, Reinhard Knöchel, F. Okada, T. Matsuo, Jun-ichi Nishizawa, H. Tromp, H.A. Willing, T. Shimamura, L.F. Eastman, H. L. Thal, K. Takiyma, A. Mizobuchi, R.A. Linke, Tatsuo Itoh, Klaus Schunemann, Hang-Sheng Tuan, J.M. Reeves, Mohamed R. M. Rizk, Kin-Wah Lee, N. Komiyama, Alfred Y. Cho, P. De Santis, W. Steenaart, Yasuo Okuno, H. Kurebayashi, M.S. Shur, M. Washio, H. Shigesawa, Y. Yokochi, Martin Victor Schneider, C. Rauscher, I.N. El-Behery, H.L. Abdel-Malek, K. Ohwi, A.M.K. Saad, Y. Takimoto, A.S. Hebert, D.J. Harris, G.F. Engen, John W. Bandler, K. Motoya
Publikováno v:
IEEE Transactions on Microwave Theory and Techniques. 26:1045-1051
Autor:
T. Saito, V.M. Ristic, R.M. Dickinson, T.P. Carlisle, J.P. Perry, K.R. Goudey, D.C. Buck, F. Okada, M.L. King, V.J. Albanese, M. Kuramoto, R.D. Wengenroth, A.C. Priou, D. Kerbs, G.E. Forterre, A.F. Sciambi, D.R. Bromaghim, K. Tomiyasu, C. Fournet-Fayas, M. Nakamura, T.P. Sorensen, K. Ohwi, H.J. Mohr
Publikováno v:
IEEE Transactions on Microwave Theory and Techniques. 26:376-378
Publikováno v:
IEEE Transactions on Magnetics. 23:3748-3750
A three-port magnetically-tunable ferrite resonator circuit is proposed, which uses a ferrite resonator and coplanar waveguide on a dielectric substrate. This circuit has both resonator and isolator properties, and is applicable to a magnetically-tun